138865

138,865 is an odd composite number composed of two prime numbers multiplied together.

What does the number 138865 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

138865 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 138865:

5 × 27773

See below for interesting mathematical facts about the number 138865 from the Numbermatics database.

Names of 138865

Cardinal: 138865 can be written as One hundred thirty-eight thousand, eight hundred sixty-five.

Scientific notation

Scientific notation: 1.38865 × 10⁵

Factors of 138865

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 27778

Divisors of 138865

Number of divisors d(n): 4
Complete list of divisors:
1 5 27773 138865
Sum of all divisors σ(n): 166644
Sum of proper divisors (its aliquot sum) s(n): 27779
138865 is a deficient number, because the sum of its proper divisors (27779) is less than itself. Its deficiency is 111086

Bases of 138865

Binary: 100001111001110001₂
Hexadecimal: 0x21E71
Base-36: 2Z5D

Squares and roots of 138865

138865 squared (138865²) is 19283488225
138865 cubed (138865³) is 2677801592364625
The square root of 138865 is 372.6459445641
The cube root of 138865 is 51.7842391291

Scales and comparisons

How big is 138865?

138,865 seconds is equal to 1 day, 14 hours, 34 minutes, 25 seconds.
To count from 1 to 138,865 would take you about fourteen hours.

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
A cube with a volume of 138865 cubic inches would be around 4.3 feet tall.

Recreational maths with 138865

138865 backwards is 568831
The number of decimal digits it has is: 6
The sum of 138865's digits is 31
More coming soon!

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The information we have on file for 138865 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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